I realized this morning that I have become much more interested in what other systems offer since I started thinking about collaborative campaign design etc. I have always been drawn to heroic fantasy, which is well handled by the two systems I know best. Letting players pick a genre instead of me pitching one has got me thinking about how I might run scifi, sci-fantasy, horror, steampunk, ... So, giving players more ownership of the game has changed my interest in other systems and I find myself reading up on other systems and what they do best.
I wonder if others have gone through a similar realization that they can do more and move out of their comfort zone.